1878 DONAU-DAMPFSCHIFFFAHRTS GESELLSCHAFT (DDSG) 10 Kreuzer green, rare type II, tied by oval "DDSG AGENTIE RADUJEVAZ" (Serbia) in blue on entire letter from Negotin (4.11.1878) to Orsova. Very fine and EXTREMELY RARE COVER FROM SERBIA. This oval cancel was missing in most of the major DDSG collection including: Capellaro, Steindler, Antonini or Kardosch. In the "Alexander" collection of Serbia (David Feldman 1986) a similar Radujevaz cover sold for 18400 CHF (illustrated in the Kardosch handbook p. 367). Another cover from same correspondance but with a partial strike is illustrated in the Ferchenbauer handbook on page 782. (Serbien)